NJU7084
HIGH-POWER & LOW-VOLTAGE AUDIO POWER AMPLIFIER
s GENERAL DESCRIPTION
The NJU7084 is an audio power amplifier designed for
telephone applications. No external coupling capacitors
are required because of the differential outputs. The
closed loop gain is adjusted by two external resistors,
and a SD pin permit power down with muting the input
signal.
The NJU7084 improves high output power compared
with other amplifier.
s PACKAGE OUTLINE
NJU7084R
sAPPLICATION
qCell Phone, PHS
qPortable Telephone, Wireless Telephone
qWhite Goods
qSecurity Alarm
qMonitor
s FEATURES
qOperating Voltage
qOperating Current
NJU7084M
V+=2.8 to 5.5V
IDD1=2.5mA typ. (V+=5V,RL=∞, no signal)
IDD1=2mA typ. (V+=3V,RL=∞, no signal)
IDD2=2µA max.
P0=1W typ.
(V+=5V,RL=8Ω,THD=2%)
P0=400mW typ.(V+=3V,RL=4Ω,THD=2%)
qSupply Current in Shutdown Mode
qOutput Power
qThermal Shutdown Circuit
q C-MOS Technology
q Package Outline
VSP8, DMP24
s PIN CONFIGURATION & BLOCK DIAGRAM
V+
-IN
―
OUTA
AmpA
+IN
＋
―
AmpB
＋
SDTC
BIAS
TSD
SD
OUTB
(VSP8)
1. SD
2. SDTC
3. +IN
4. -IN
5. OUTA
6. V+
7. GND
8. OUTB
(DMP24)
1. NC
2. NC
3. NC
4. NC
5. SD
6. SDTC
7. +IN
8. -IN
9.
10.
11.
12.
13.
14.
15.
16.
NC
NC
NC
NC
NC
NC
NC
NC
17.
18.
19.
20.
21.
22.
23.
24.
OUTA
V+
GND
OUTB
NC
NC
NC
NC
GND
-1-
